Dynamic Thermal Feedback in Highly Immersive VR Scenarios: a Multimodal Analysis of User Experience

TL;DR

This study investigates how different levels of thermal feedback affect user experience in highly immersive VR scenarios, revealing that thermal feedback enhances presence and influences user behavior, with nuanced effects based on feedback quality and participant profiles.

Contribution

It provides a comprehensive multimodal analysis of thermal feedback effects in immersive VR, comparing static and dynamic feedback levels and offering guidelines for future multisensory VR design and research.

Findings

Thermal feedback increases presence in immersive VR.

No significant UX difference between static and dynamic thermal feedback.

User behavior is influenced by thermal feedback order.

Abstract

Thermal feedback is critical to a range of Virtual Reality (VR) applications, such as firefighting training or thermal comfort simulation. Previous studies showed that adding congruent thermal feedback positively influences User eXperience (UX). However, existing work did not compare different levels of thermal feedback quality and mostly used less immersive virtual environments. To investigate these gaps in the scientific literature, we conducted a within-participant user study in two highly-immersive scenarios, Desert Island (n=25) and Snowy Mountains (n=24). Participants explored the scenarios in three conditions (Audio-Visual only, Static-Thermal Feedback, and Dynamic-Thermal Feedback). To assess the complex and subtle effects of thermal feedback on UX, we performed a multimodal analysis by crossing data from questionnaires, semi-structured interviews, and behavioral indicators. Our results show that despite an already high level of presence in the Audio-Visual only condition, adding thermal feedback increased presence further. Comparison between levels of thermal feedback quality showed no significant difference in UX questionnaires, however this result is nuanced according to participant profiles and interviews. Furthermore, we show that although the order of passage did not influence UX directly, it influenced user behavior. We propose guidelines for the use of thermal feedback in VR, and the design of studies in complex multisensory scenarios.